Endotracheal intubation is one of the key skills that should be possessed by every physician in Emergency Medicine as well as every paramedic [1]. For confirming endotracheal tube (ET) placement, there are multiple options, including direct visualization of the vocal cords, observation of chest auscultation, or chest expansion [2]. However, each of those methods has unique limitations, particularly during CPR, because observation of chest movements requires interruption in chest compression. According to the American Heart Associate 2015 guidelines for CPR, capnography is recommended as the criterion standard for confirming correct ET placement; however, this method has also limitations, especially in patients in cardiac arrest.